* subversion/libsvn_subr/io.c
  (svn_io_wait_for_cmd): Add signal information to error.

Suggested by: Doug Robinson <doug.robinson{_AT_}wandisco.com>


git-svn-id: https://svn.apache.org/repos/asf/subversion/trunk@1488294 13f79535-47bb-0310-9956-ffa450edef68